Every link that is input into a RichText or URL Field is stored in the URL table.
You can view and edit published URLs in the Link manager without having to modify the Content items.
This means that you don't have to edit and re-publish your content if you just want to change a link.

The Link manager contains all the necessary information about each address including its status (valid or invalid)
and the time it was last checked (when the system attempted to validate the URL).
By default, all URLs are valid.

You can use the ezplatform:check-urls command to check all the addresses stored in the URL table.
It validates the links by accessing them one by one.
If a broken link is found, its status is set to "invalid". The last checked field is always updated.